Gypsum Caves: Gypsum Caves, also called gypsum karst caves, form with the dissolution of gypsum by groundwater. As marginally acidic drinking water percolates by gypsum-abundant bedrock, it gradually dissolves the gypsum, producing underground voids and passages. Soil h2o probable checking: a gypsum block is often inserted into the soil, and https://www.propanraya.com/id/produk/eco-gypsum-ee-4050